Magneto mounting attachment



Aug. 11, 1931.v a. J. LANG ET' AL MAGNETO MOUNTING ATTACHMENT Filed Jail. 24. 1930 2 Sheets-Sheet l iNVE TOR. Z560 [Ha/79 x? f ouszwefsw filjla 9 ATTORK 20 be driven thereby.

Patented Aug. 11, 1931 UNITED STATES PATENT OFFICE GUSTAVE J. LANG, OF LONG-MEADOW, AND JOHN F. BIARTIN', SPRINGFIELD, MAS SACIIUSETTS, ASSIGNORS TO AMERICAN BOSCH MTAGNETO CORPORATION, OF SPRING- FIELD, MASSACHUSETTS, A CORPORATION OF YORK MAGNETO Mounrn-ie ATTACHMENT Application filed January 2t, 1930. Serial No. 423,227.

This invention relates to improvements in mounting attachments, especially an attachment for securing a magneto to an internal. combustion engine. I

. An object of the invention is to provide a simple, convenient, efficient and inexpensive member adapted to support a magneto of the desired type in operative position upon an internal combustion engine, and capable of being allixcd without requiring extensive structural changes in the body of the engine, or any rearrangement of the parts or accessories thereof.

' Vith some engines, especially upon auto- .1 mobiles, the addition of a magneto presents considerable difficulty, because the space available may not offer a location where the magneto may be disposed and readily connected to one of the shafts of the engine to The engine of the new Ford automobile, designated as Model A,

is of this design; for the power to actuate the magneto must be taken from the large gear housing at the front of the engine and the magneto must be placed accordingly and be prevented from interfering with the carburetor or other adjacent devices.

The aim of this invention is to solve the problem which arises from these conditions.

Another object of this invention is to provide a support to carry a magneto and at the same time permit it to be driven through a suitable impulse coupling, to facilitate starting the engine, with current for ignition generated by the magneto at low speed.

The nature and advantages of the invention will appear from the following description, taken with the drawings, which illustrate an embodiment of the attachment, But the disclosure is illustrative only and variati ons may be made in numerous ways, without departing from the principle of the in vcntion or exceeding the scope of the appended claims.

On the drawings,

Fig. 1 shows a side view of a mounting attachment according to this invention, in position on an engine; Fig. 2 is'a front view thereof; Fig. 3 is a top view of the mounting itself; Fig. 4 is a section on line 1et of Fig. 2; Fig.

5 is a rear view of the attachment; Fig. 6 is an elevation of a closure for a gear casing which part of the mounting; Fig. 7 is a section on line 7-7 of Fig. 5; and Fig. 8 is a side view in part of the attachment, seen from the left of Fig. 3.

The same numerals identify the same parts throughout.

At 1 is shown a partof an internal combu tion engine, the same being the engine of the Model A Ford car, having at the side a carburetor 2 and in front a housing 3 for the gear which connects the crank shaft of the engine to the lay or valve shaft. The crank shaft and valve shafts are not shown, but the former is located in the crank case 4 and its forward projecting end. carries a pulley 5. while the lay shaft runs along the side of the engine under the valve rods, which it operates by'means of cams in the usual way. Pulley 5 is connected by a belt 6 to the fan 7, and on the other sideof the engine adjacent the housing 3 is a pump 8 to circulate the cooling medium for the engine.

To equip an engine of this design with a magneto 9 of the bipolar type androtating arn'iature requires that the magneto be placed so that it will not interfere with the carbureter 2, and that the armature be driven from the gear in the housing 3; and to this end the magneto is supported on an attach ment 10, comprising a base plate or rest 11, with a gear casing 12 at one end to contain a gear which rotates the armature shaft, and meshes with the gear in the housing 8. The front of this housing has a cover, part of which is shown at 13; and the attachment is atlixed to the side of the housing shown at 1 1; the remainder 15 of the cover overlying part of the casing 8.

Ordinarily, the housing 3 has the, outline indicated by the portions 18 and 14: of the cover, and the gear inside is wholly enclosed; but in the practice of this invention this housing is cut away to provide the straight side 14, so that the gear therein may project into the casing 12. The attachment 10 has a flange or webat one side of the plate 11, with a horizontal portion 16 extending along the plate 10 and a vertical portion 17 united to the rear end of the casing 12. At this end the casing is open; and it also has an opening 18 in the side adjacent the web 16. At its front face or end 19 the casing 12 is closed, but this end has a concave edge 20, which gives to one side of the casing in front the approximate form of a segment corresponding to the portion of the cover for the housing 3. See Figs. 2 and 5. The concave edge 20 hasscrew holes 21.

At the top and bottom the portion 17 of the web has projections 22, with bolt holes 23. The plate 11 has bolt holes 24 to secure to it the housing 25 of the magneto; which has magnets 26, a timer casing 27 at one end of the housing 25, an extension 28 at the other end and a distributor 29 secured to the extension 28 by clips 30. The armature shaft is shown at 31.

The rear end of the casing 12 is provided with a closure 32, with a central aperture 33 to admit the armature shaft 31, and perforated lugs On the inner face of the closure 32 is an annular rib 35, received in the casing 12, and abutting an annular shoulder 36 therein. On the end of the shaft 31 within the casing 12 is the gear 37 by which the armature is coupled to the gear (not shown) in the housing 3 to be driven; and at 38 are bolts to be passed through holes in projections 39 on the exterior of the casing 12 and screwed into holes in the projections 34: to make the closure 32 fast between the casing 12 and magneto 9. BoltslO are passed through the holes 23 and into holes in the engine to hold the attachment thereon, and bolts 11 passing through holes in the portion 15, are screwed into holes 21 to make the plate 15 fast to the front 19 of the casing 12 along the concave edge 20.

In practice the gear in the housing 3 turns the gear 37 on the armature shaft 31. The gear 37 may be joined to the shaft 31 through a so-called impulse coupling indicated on Fig. 4. This coupling acts to cause the armature to be retarded at low speed, and includes a yielding element, such as a spring, between the gear 37 and shaft 31, and is accelerated, usually twice per revolution, to generate enough current to permit the engine to be started. \Vhen the speed of the engine rises, the impulse coupling automatically ceases to retard and accelerate the armature, which is then driven at a uniform rate as regards the crank shaft, to furnish current for ignition. The impulse coupling is not part of this invention, and various types are well known so that further description thereof is unnecessary.

The mounting attachment, affixed as shown and described, thus supports the magneto securely in proper position. It enables a magneto to be carried by the engine without obst-ructing the carbureter or other accessories, and to be readily connected to be driven by the gear in the housing 3. No rearrangement of the carbureter or other auxiliary devices or parts of the engine is necessary; and very little structural change has to be made to on able the attachment to be fitted to the housing 3. The entire attachment is quite simple, but Very strong, and can be produced at comparatively low cost.

It will be seen from Figs. 1 and 5 that the base plate 11 is not exactly perpendicular to the part 17, but when the latter is attached to the engine, the plate 11 is held so that it inclines downward and away from the side of the engine to a slight extent. This form of the attachment is necessary because of the fact that the upper part of the magneto bearing the distributor 29 is of greater width than the lower part; and if the plate 11 were not inclined to the side of the engine, so as to tilt the magneto a little as Fig. 2 shows, the plate 11 would have to be wider. But by making the plate at the angle shown, the magneto is properly supported and extra width of the plate is not required. Thus both weight and material. are saved when the attachment is used.

Having described our invention, what we claim is:

1. A mounting for a magneto comprising a base plate, a gear casing with an opening at one side on said base plate, the casing having an integral end with a concave edge substan tially closing the front of the casing, and a removable perforated closure for the rear of the casing.

2. A mounting for a magneto comprising a base plate, a gear casing on said plate, the casing having the form of a circular segment at one side to enable the mounting to be attached to an engine, the casing having an integral end with a concave edge concentric with said segment substantially closing the front of the casing, and a removable perforated closure for the rear of the casing.

3. A mounting for a magneto comprising a base plate, a gear casing thereon, said casing having an opening at one side to permit connection with a drive-gear, the casing being substantially closed at one end, and a perforated-closure for the other end of said 5. A mounting for a magneto comprising i a base plate, a web at one side of the plate, a gear casing at one end of the plate joined to said web, said casing having portions above the web and below the plate to enable the mounting to be affixed to an engine, the ms ing having an integral end with a concave edge substantially closing the front of the casing, and a removable perforated closure for the rear of the casing.

6. The combination of an internal combustion engine having a gear housing from which a gear projects at one side, and an attachment with a portion of segmental form as regards said housing to be aflixed to said side of the housing, and completing the circular configuration thereof.

7. The combination of an internal combustion engine having a gear housing from which a circular gear projects at one side thereof, an attachment with a portion of segmental. form as regards said housing to be aflixed to said side, and completing the circular configuration thereof and closure means for said housing and said portion.

8. A mounting attachment for a magneto comprising a base plate and a gear casing thereon, the gear casing having a closed end with a concave edge at one side, the casing having an opening at one side adjacent said edge, and a removable perforated closure at its opposite end.

9. A mounting attachment for a magneto comprising a base plate, a gear casing joined to said plate, said casing having one end closed and the other end open, a perforated removable closure for the open end, the casing having an opening at the side to enable a gear therein to be connected to a drive gear, and a web joining the plate to the casing.

10. A mounting attachment for a magneto comprising a base plate, a gear casing at one end. of the plate, said casing being closed at one end and open at the other, said closed end having a concave edge at one side, the casing having an opening in its side adjacent said concave edge, the open end having a closure with an annular rib on one face to telescope into the casing, a similar rib in the open end of the casing to cooperate with the first rib, and a web united with one side of the base plate and joined to the casing adjacent the opening in the side of the latter.

In testimony whereof, we aflix our signatures.

GUSTAVE J. LANG. JOHN F. MARTIN. 

